Vsd frequency inverter ac drive vfd 220v 2 2kw single phase input and 220v 3 phase output - купить fateks.ru  
 
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vsd frequency inverter ac drive vfd 220v 2 2kw single phase input and 220v 3 phase output купить по лучшей цене

Phase angle measurement between two AC waveform having same frequency is needed in various applications like 3-phase transformer connection,CT and PT installation,Power factor determination. Conventional phase angle meters are bulky and costly.A new method for measuring phase angle using a digital PLL is proposed with operating frequency range of 20Hz to 1kHz. This design also has lag/lead identification feature and is cost effective.The phase angle meter involves phase detection using PLL, frequency to voltage conversion, calibration and display.A regulated power supply and a phase shifter circuit are also designed to test the phase angle meter.A 3 1/2 digit LED display panel meter is used to display the final measured phase difference between two AC waveforms fed as input.
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